Translator Disclaimer
1 June 2003 Structure of Fish Assemblages in Amazonian Rain-Forest Streams: Effects of Habitats and Locality
Author Affiliations +
Abstract

We examined fish assemblage structure in three headwater rain-forest streams in the Urubu River Basin, Central Amazonia, as it relates to habitat heterogeneity. Riffles and pools, two types of stream habitat, were defined by current, depth, and substrate parameters, adjusted for Amazonian stream characteristics. We assessed species richness, composition, and abundance as they varied between riffles and pools across three similar streams. Four riffles and four pools were identified in each stream and sampled four times during 1996 and 1997. The samples yielded a total of 856 individuals of 22 species. The most abundant species were in the families Characidae, Lebiasinidae, Helogenidae, and Rivulidae. We found an interactive influence of riffle/pool habitat and stream factors on species richness, composition, and abundance. Rain-forest stream fish assemblages are structured by both habitat and stream locality.

The American Society of Ichthyologists and Herpetologists
Cristina Motta Bührnheim and Cristina Cox Fernandes "Structure of Fish Assemblages in Amazonian Rain-Forest Streams: Effects of Habitats and Locality," Copeia 2003(2), 255-262, (1 June 2003). https://doi.org/10.1643/0045-8511(2003)003[0255:SOFAIA]2.0.CO;2
Received: 24 January 2001; Accepted: 10 December 2002; Published: 1 June 2003
JOURNAL ARTICLE
8 PAGES


SHARE
ARTICLE IMPACT
RIGHTS & PERMISSIONS
Get copyright permission
Back to Top